https://repositorio.ufms.br/handle/123456789/5944 2026-03-28T00:39:40Z 2026-03-28T00:39:40Z https://repositorio.ufms.br/handle/123456789/14321 2026-02-28T21:01:25Z 2026-01-01T00:00:00Z

Título: Análise e desenvolvimento de uma ferramenta computacional para verificação de vigas metálicas com seção I segundo a NBR 8800:2024 Abstract: The recent update to ABNT NBR 8800 introduced significant changes to the design criteria for steel structures, directly affecting the calculation routines used in professional practice. In this context, this paper presents the development of a spreadsheet-based computational tool for the structural verification of steel beams in accordance with ABNT NBR 8800:2024. The methodology is based on the study of the current standard, the mathematical modeling of structural verifications, and the automated implementation of calculations. The obtained results were validated through a bibliographic example and comparative analyses, comparing the results with the tool's output. The findings highlight differences in resistance parameters and reinforce the importance of normative updates and the use of a computational tool that provides greater precision and lower possibilities of manual errors, as well as the practical applicability and ease of use of the developed tool. It is concluded that the tool is a viable auxiliary resource for professional practice, noting that the current scarcity of updated technical literature according to the 2024 version limits the performance of more extensive comparisons at this time. Tipo: Trabalho de Conclusão de Curso

2026-01-01T00:00:00Z https://repositorio.ufms.br/handle/123456789/14319 2026-02-28T18:28:04Z 2026-01-01T00:00:00Z

Título: Análise comparativa de mistura asfáltica convencional e mistura asfalto borracha Abstract: This study addresses the accelerated degradation of the Brazilian road network due to increased cargo traffic and severe weather conditions, proposing the use of modified asphalts as an alternative to extend pavement durability. The primary objective is to conduct a comparative analysis between a conventional asphalt mixture and a tire-rubber modified mixture (wet process, terminal blending type), evaluating their volumetric and mechanical behavior through laboratory tests. The methodology employed Marshall dosage to determine the optimal design binder content for both mixtures, using basaltic aggregates and AB-8 modified binder. Tests included aggregate characterization, particle size analysis (DNIT Range C), stability, flow, and tensile strength. he results demonstrated that the asphalt-rubber mixture presented an "optimal" binder content superior to that of the conventional mixture. This increase is justified by the higher viscosity of the modified binder and the need for a thicker film to coat the aggregates. Notably, the modified mixture achieved superior tensile strength and a higher capacity for elastic deformation (flow) without loss of internal cohesion. It is concluded that the use of asphalt-rubber binder is technically viable and advantageous, providing gains in mechanical performance and environmental sustainability through the final disposal of waste tires. Tipo: Trabalho de Conclusão de Curso

2026-01-01T00:00:00Z https://repositorio.ufms.br/handle/123456789/14318 2026-02-28T18:10:45Z 2026-01-01T00:00:00Z

Título: Análise Comparativa e de Reprodutibilidade do Teor de Ligante em Misturas Asfálticas: Métodos Rotarex, Soxhlet e Mufla (NCAT) Abstract: Controlling the asphalt binder content is one of the main parameters for ensuring the structural performance and durability of flexible pavements, since deviations in dosage compromise the mechanical strength and service life of the mixtures. In this context, the present study aimed to compare the efficiency of binder extraction in dense asphalt mixtures using three methods used in Brazil: ignition (Muffle furnace), reflux extraction (Soxhlet), and centrifugation (Rotarex). Additionally, a comparative analysis of the results obtained by the ignition method was performed in two different laboratories to evaluate the reproducibility of the test. Test specimens molded with 30/45 Petroleum Asphalt Cement (PAC), classified in the C granulometric range, with a design content of 5.4%, adopted as a reference value, were analyzed. The tests followed the current technical standards (DNIT and ABNT), evaluating the contents obtained and their deviations from the reference. The granulometry of the aggregates after extraction was also evaluated to identify possible degradation or loss of fines, in addition to the operational time of each procedure. The results indicated variations between the methods, including between the muffles of the two laboratories. The ignition method stood out for its lower variability and greater proximity to the reference value. The Rotarex method presented binder content values higher than the actual ones, possibly associated with incomplete extraction of the binder and loss of fine material during the test, while the Soxhlet method required longer operating time and presented greater dispersion in the data. It is concluded that the choice of procedure should consider technical accuracy and operational, environmental, and safety aspects, with the muffle furnace being a robust alternative for technological control of pavements. Tipo: Trabalho de Conclusão de Curso

2026-01-01T00:00:00Z https://repositorio.ufms.br/handle/123456789/14316 2026-02-28T14:46:36Z 2026-01-01T00:00:00Z

Título: Aplicação de Indicador de Desempenho no Controle de Prazos e Apoio à Gestão de Contratos Abstract: Development and application of a performance indicator to monitor deadlines in construction projects, supporting contract management, managerial decision-making, and the prevention of delays in the construction industry. Tipo: Trabalho de Conclusão de Curso

2026-01-01T00:00:00Z